9902.03.72 - N-sec-Butyl-4-(2-methyl-2-propanyl)-2,6-dinitroaniline (Butralin) (CAS No. 33629-47-9) (provided for in subheading 2921.43.90)

This HTS category, 9902.03.72, pertains to the specific chemical compound N-sec-Butyl-4-(2-methyl-2-propanyl)-2,6-dinitroaniline, commonly known as Butralin. This classification is established under Chapter 99, which covers temporary legislation and special provisions. While the CAS number 33629-47-9 is provided for identification, the primary classification is rooted in its function and chemical identity as a dinitroaniline derivative. It is important to note that this specific classification is made "provided for in subheading 2921.43.90," indicating that its underlying chemical nature falls within a broader chemical group, but it is being temporarily managed or subjected to specific regulations under this Chapter 99 provision.

As a leaf node within the HTS, 9902.03.72 does not have further subdivisions. Therefore, its practical classification relies on the definitive identification of Butralin. Unlike the sibling categories which primarily deal with live animals, this entry is strictly for a synthesized chemical compound. The distinction lies in the fundamental nature of the product: organic chemicals versus live organisms. The purpose of this temporary classification is typically to address specific trade policies, import restrictions, or temporary modifications related to this particular substance, often for reasons related to agricultural policy or temporary trade agreements.